18916072 has 32 divisors (see below), whose sum is σ = 40821120. Its totient is φ = 8049600.

The previous prime is 18916063. The next prime is 18916099. The reversal of 18916072 is 27061981.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7338 + ... + 9574.

It is an arithmetic number, because the mean of its divisors is an integer number (1275660).

Almost surely, 2^18916072 is an apocalyptic number.

It is an amenable number.

18916072 is an abundant number, since it is smaller than the sum of its proper divisors (21905048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18916072 is a wasteful number, since it uses less digits than its factorization.

18916072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 18916072 is about 4349.2610866675. The cubic root of 18916072 is about 266.4466838560.

It can be divided in two parts, 189 and 16072, that added together give a palindrome (16261).

The spelling of 18916072 in words is "eighteen million, nine hundred sixteen thousand, seventy-two".